/* roulang page: index */
:root{
  --brand:#1D5BD8;--brand-700:#164AB8;--brand-100:#E7EEFE;
  --accent:#0FA98F;--accent-soft:#E6F7F3;
  --warn:#F5A524;
  --bg:#F5F7FB;--surface:#FFFFFF;
  --ink:#0E1A2B;--muted:#5B6B82;--border:#E4EAF3;
  --r-sm:8px;--r-md:12px;--r-lg:16px;--r-pill:999px;
  --sh-1:0 1px 2px rgba(14,26,43,.05);
  --sh-2:0 10px 30px -14px rgba(29,91,216,.22);
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font-family:var(--font-sans);font-size:16px;line-height:1.75;color:var(--ink);background:var(--bg);padding-bottom:72px;-webkit-font-smoothing:antialiased}
@media(min-width:1024px){body{padding-bottom:0}}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .2s ease}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{list-style:none;padding:0}
h1{font-size:clamp(26px,5vw,44px);font-weight:800;line-height:1.25;letter-spacing:-.01em}
h2{font-size:clamp(22px,3.4vw,32px);font-weight:700;line-height:1.3;letter-spacing:-.01em}
h3{font-size:18px;font-weight:600;line-height:1.45}
:focus-visible{outline:2px solid rgba(29,91,216,.45);outline-offset:2px;border-radius:4px}
.tnum{font-variant-numeric:tabular-nums}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media(max-width:767px){.container{padding:0 16px}}
.section{padding:56px 0}
@media(min-width:768px){.section{padding:72px 0}}
@media(min-width:1024px){.section{padding:96px 0}}
.section-white{background:var(--surface)}

/* 顶部信息条 */
.topbar{background:#0B1526;color:#C6D2E4;font-size:13px;height:36px;display:flex;align-items:center}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%}
.topbar-text{display:flex;align-items:center;gap:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-text i{color:var(--accent)}
.topbar-link{color:#fff;display:inline-flex;align-items:center;gap:6px;white-space:nowrap;font-weight:500}
.topbar-link:hover{color:#8FB6FF}
@media(max-width:767px){.topbar{font-size:12px}.topbar-link{display:none}}

/* 导航 */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--border);transition:box-shadow .25s ease}
.site-header.scrolled{box-shadow:0 1px 2px rgba(14,26,43,.05),0 6px 20px -14px rgba(14,26,43,.18)}
.nav-inner{height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.logo{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:700;letter-spacing:-.01em;line-height:1.1;color:var(--ink)}
.logo-mark{width:36px;height:36px;border-radius:10px;background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;font-size:15px;box-shadow:0 6px 16px -8px rgba(29,91,216,.6);flex:0 0 auto}
.logo-sub{display:block;font-size:11px;font-weight:400;color:var(--muted);letter-spacing:0;margin-top:2px}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-link{position:relative;font-size:15px;font-weight:500;color:#41506A;padding:6px 0;white-space:nowrap}
.nav-link:hover{color:var(--brand)}
.nav-link.active{color:var(--brand);font-weight:600}
.nav-link.active::after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;border-radius:2px;background:var(--brand)}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{display:none;width:44px;height:44px;border-radius:10px;border:1px solid var(--border);background:#fff;color:var(--ink);cursor:pointer;font-size:17px;align-items:center;justify-content:center;transition:all .2s ease}
.nav-toggle:hover{border-color:rgba(29,91,216,.4);color:var(--brand)}
@media(max-width:1023px){
  .nav-links{display:none}
  .nav-ghost{display:none}
  .nav-toggle{display:inline-flex}
  .nav-actions .btn-primary{min-height:40px;padding:0 16px;font-size:14px}
}
@media(max-width:519px){.nav-actions .btn-primary{display:none}}

/* 抽屉 */
.nav-mask{position:fixed;inset:0;background:rgba(11,21,38,.42);opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;z-index:70}
.nav-mask.open{opacity:1;visibility:visible}
.nav-drawer{position:fixed;top:0;right:0;bottom:0;width:300px;max-width:86vw;background:#fff;z-index:80;transform:translateX(100%);transition:transform .3s cubic-bezier(.4,0,.2,1);display:flex;flex-direction:column;padding:20px;overflow-y:auto}
.nav-drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.drawer-close{width:44px;height:44px;border-radius:10px;border:1px solid var(--border);background:#fff;cursor:pointer;transition:all .2s ease}
.drawer-close:hover{border-color:rgba(29,91,216,.4);color:var(--brand)}
.drawer-link{display:flex;align-items:center;justify-content:space-between;padding:14px 4px;border-bottom:1px solid var(--border);font-size:15px;font-weight:500;color:#41506A;min-height:44px;transition:color .2s ease}
.drawer-link.active{color:var(--brand);font-weight:600}
.drawer-link:hover{color:var(--brand)}
.drawer-cta{margin-top:24px}
.drawer-cta .btn{width:100%}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 22px;border-radius:10px;font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:all .22s ease;text-align:center}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 1px 2px rgba(14,26,43,.08)}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0);filter:brightness(.95)}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--border)}
.btn-ghost:hover{border-color:rgba(29,91,216,.4);color:var(--brand);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0);filter:brightness(.98)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:#0C8F79;color:#fff;transform:translateY(-1px);box-shadow:0 10px 30px -14px rgba(15,169,143,.45)}
.btn-accent:active{transform:translateY(0);filter:brightness(.95)}
.btn-pill{border-radius:var(--r-pill);min-height:40px;padding:0 20px;font-size:14px}

/* 首屏 */
.hero{background:var(--surface);border-bottom:1px solid var(--border);padding:56px 0 64px}
@media(min-width:1024px){.hero{padding:96px 0 104px}}
.hero-grid{display:grid;grid-template-columns:1fr;gap:36px;align-items:center}
@media(min-width:1024px){.hero-grid{grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:56px}}
.hero-tag{display:inline-flex;align-items:center;gap:8px;background:var(--brand-100);color:var(--brand);font-size:13px;font-weight:600;padding:6px 14px;border-radius:var(--r-pill);margin-bottom:18px}
.hero h1{margin-bottom:18px}
.hero-lead{font-size:17px;color:var(--muted);max-width:540px;margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px}
.hero-points{display:flex;flex-wrap:wrap;gap:12px 24px;border-top:1px solid var(--border);padding-top:20px}
.hero-points li{display:flex;align-items:center;gap:8px;font-size:14px;color:#41506A}
.hero-points i{color:var(--accent);font-size:14px}
.hero-visual{position:relative;border-radius:var(--r-lg);overflow:hidden;background:var(--brand-100);box-shadow:var(--sh-2)}
.hero-visual img{width:100%;aspect-ratio:16/10;object-fit:cover}
@media(max-width:1023px){.hero-visual img{aspect-ratio:16/8;max-height:250px}}
.hero-visual::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(29,91,216,.30),rgba(29,91,216,.04) 64%);pointer-events:none}

/* 板块标题 */
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px}
.sec-head h2{margin-bottom:8px}
.sec-head p{font-size:15px;color:var(--muted);max-width:640px}
.sec-center{text-align:center;max-width:720px;margin:0 auto 32px}
.sec-center p{font-size:15px;color:var(--muted)}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);min-height:44px}
.text-link:hover{color:var(--brand-700);text-decoration:underline;text-underline-offset:3px}

/* 卡片通用 */
.card{background:var(--surface);border-radius:var(--r-lg);box-shadow:var(--sh-1);transition:transform .24s ease,box-shadow .24s ease;overflow:hidden}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.badge{display:inline-flex;align-items:center;background:var(--accent-soft);color:var(--accent);font-size:11px;font-weight:600;padding:3px 10px;border-radius:var(--r-pill);letter-spacing:.02em}

/* 卖点三连 */
.feature-grid{display:grid;grid-template-columns:1fr;gap:16px}
@media(min-width:1024px){.feature-grid{grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:24px}}
.feature-main{display:flex;flex-direction:column;background:#fff;border-radius:var(--r-lg);box-shadow:var(--sh-1);transition:transform .24s ease,box-shadow .24s ease;overflow:hidden}
.feature-main:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.feature-media{overflow:hidden;background:var(--brand-100)}
.feature-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s ease}
.feature-main:hover .feature-media img{transform:scale(1.03)}
.feature-main-body{padding:26px 28px 28px}
.feature-main-body h3{font-size:20px;margin-bottom:12px}
.feature-main-body p{font-size:14px;line-height:1.75;color:var(--muted)}
.feature-side{display:grid;grid-template-columns:1fr;gap:16px}
@media(min-width:768px) and (max-width:1023px){.feature-side{grid-template-columns:1fr 1fr;gap:20px}}
.feature-mini{background:#fff;border-radius:var(--r-lg);padding:26px 24px;box-shadow:var(--sh-1);transition:transform .24s ease,box-shadow .24s ease}
.feature-mini:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.feature-mini h3{font-size:18px;margin-bottom:10px}
.feature-mini p{font-size:14px;line-height:1.7;color:var(--muted)}
.feature-num{font-size:12px;font-weight:700;color:var(--accent);letter-spacing:.06em;margin-bottom:10px;display:block}
.icon-box{width:44px;height:44px;border-radius:12px;background:var(--brand-100);color:var(--brand);display:flex;align-items:center;justify-content:center;font-size:18px;margin-bottom:16px}

/* 场景演示 */
.scene{display:grid;grid-template-columns:1fr;gap:28px;align-items:center;margin-bottom:56px}
.scene:last-child{margin-bottom:0}
@media(min-width:1024px){
  .scene{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:56px;margin-bottom:88px}
  .scene.reverse .scene-media{order:2}
}
.scene-media{border-radius:var(--r-lg);overflow:hidden;background:var(--brand-100);box-shadow:var(--sh-1)}
.scene-media img{width:100%;aspect-ratio:16/10;object-fit:cover}
.scene-copy h3{font-size:22px;margin-bottom:14px}
.scene-copy p{font-size:15px;color:var(--muted);margin-bottom:18px}
.scene-list li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:#33405A;padding:5px 0}
.scene-list i{color:var(--accent);margin-top:7px;font-size:12px;flex:0 0 auto}
.scene-cta{margin-top:22px}

/* 列表卡片 */
.grid-cards{display:grid;grid-template-columns:1fr;gap:16px}
@media(min-width:768px){.grid-cards{grid-template-columns:repeat(2,1fr);gap:20px}}
@media(min-width:1024px){.grid-cards{grid-template-columns:repeat(3,1fr);gap:24px}}
.post-card{display:flex;flex-direction:column;background:#fff;border-radius:var(--r-lg);box-shadow:var(--sh-1);transition:transform .24s ease,box-shadow .24s ease;overflow:hidden;height:100%}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.post-cover{overflow:hidden;background:var(--brand-100)}
.post-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s ease}
.post-card:hover .post-cover img{transform:scale(1.03)}
.post-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.post-body h3{font-size:16px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color .2s ease}
.post-card:hover .post-body h3{color:var(--brand)}
.post-body p{font-size:14px;line-height:1.7;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-meta{margin-top:auto;padding-top:12px;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--muted);border-top:1px solid var(--border)}
.post-meta i{color:var(--brand)}
.empty-state{min-height:220px;border:1px dashed var(--border);border-radius:var(--r-lg);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;background:#fff;text-align:center;padding:28px}
.empty-state i{font-size:26px;color:var(--brand)}
.empty-state p{font-size:14px;color:var(--muted)}

/* 数据与卡片 */
.stats{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;background:#fff;border-radius:var(--r-lg);padding:28px 24px;box-shadow:var(--sh-1)}
@media(min-width:768px){.stats{grid-template-columns:repeat(4,1fr);gap:24px;padding:32px 36px}}
.stat-num{font-size:clamp(24px,3vw,32px);font-weight:800;color:var(--accent);line-height:1.2}
.stat-label{font-size:14px;color:var(--muted);margin-top:6px}
.quote-grid{display:grid;gap:16px;grid-template-columns:1fr;margin-top:24px}
@media(min-width:768px){.quote-grid{grid-template-columns:repeat(3,1fr);gap:20px}}
.quote-card{background:#fff;border-radius:var(--r-lg);padding:26px 24px;box-shadow:var(--sh-1);transition:transform .24s ease,box-shadow .24s ease}
.quote-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.quote-card h3{font-size:17px;margin-bottom:10px}
.quote-card p{font-size:14px;line-height:1.75;color:var(--muted)}
.quote-icon{width:44px;height:44px;border-radius:12px;background:var(--accent-soft);color:var(--accent);display:flex;align-items:center;justify-content:center;font-size:17px;margin-bottom:14px}

/* FAQ */
.faq-list{display:grid;gap:12px;max-width:880px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--border);border-radius:12px;overflow:hidden;position:relative;transition:border-color .2s ease,box-shadow .2s ease}
.faq-item[open]{border-color:rgba(29,91,216,.35);box-shadow:var(--sh-1)}
.faq-item[open]::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--brand)}
.faq-item summary{list-style:none;cursor:pointer;padding:18px 22px;font-size:16px;font-weight:600;display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:44px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand)}
.faq-icon{color:var(--muted);transition:transform .25s ease;flex:0 0 auto;font-size:14px}
.faq-item[open] .faq-icon{transform:rotate(180deg);color:var(--brand)}
.faq-answer{padding:0 22px 20px;font-size:15px;line-height:1.8;color:var(--muted)}

/* CTA */
.cta-block{background:var(--brand-100);border-radius:var(--r-lg);padding:34px 24px;display:grid;gap:28px}
@media(min-width:1024px){.cta-block{grid-template-columns:minmax(0,1fr) minmax(0,460px);gap:48px;padding:48px;align-items:center}}
.cta-block h2{margin-bottom:14px}
.cta-block .cta-copy p{font-size:15px;color:#3C4E6B;max-width:520px}
.cta-tips{display:flex;flex-wrap:wrap;gap:12px 20px;margin-top:20px}
.cta-tips li{display:flex;align-items:center;gap:8px;font-size:14px;color:#33405A}
.cta-tips i{color:var(--brand)}
.cta-form{background:#fff;border-radius:var(--r-md);padding:24px;box-shadow:var(--sh-1);display:grid;gap:14px}
.field label{display:block;font-size:13px;font-weight:600;color:#33405A;margin-bottom:6px}
.field input,.field textarea{width:100%;border:1px solid var(--border);border-radius:10px;padding:11px 14px;font-size:15px;background:#fff;transition:border-color .2s ease,box-shadow .2s ease}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(29,91,216,.15)}
.field textarea{min-height:92px;resize:vertical}
.req{color:var(--warn);margin-left:2px}
.form-tip{font-size:12px;color:var(--muted);line-height:1.7}
.form-success{display:none;font-size:14px;color:var(--accent);background:var(--accent-soft);border-radius:10px;padding:10px 14px}
.form-success.show{display:block}

/* 页脚 */
.site-footer{background:#0B1526;color:#A9B6C9;padding:64px 0 0;margin-top:8px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:36px}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr);gap:32px}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}}
.footer-logo{display:flex;align-items:center;gap:10px;color:#fff;font-size:18px;font-weight:700;margin-bottom:16px;letter-spacing:-.01em}
.footer-logo .logo-mark{box-shadow:none}
.footer-desc{font-size:14px;line-height:1.85;color:#8E9DB4;max-width:320px}
.footer-title{color:#fff;font-size:14px;font-weight:600;margin-bottom:16px}
.footer-links li{margin-bottom:10px}
.footer-links a{font-size:14px;color:#A9B6C9}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.footer-note{font-size:14px;line-height:1.85;color:#8E9DB4}
.footer-bottom{margin-top:48px;border-top:1px solid rgba(255,255,255,.08);padding:22px 0;display:flex;flex-wrap:wrap;gap:8px 20px;justify-content:space-between;font-size:13px;color:#7C8AA0}

/* 移动端固定条 */
.mobile-bar{position:fixed;left:0;right:0;bottom:0;height:64px;background:#fff;border-top:1px solid var(--border);box-shadow:0 -8px 20px -16px rgba(14,26,43,.45);display:flex;align-items:center;justify-content:space-between;gap:12px;padding:0 16px;z-index:55}
@media(min-width:1024px){.mobile-bar{display:none}}
.mobile-bar span{font-size:13px;color:var(--muted);line-height:1.4}
.mobile-bar .btn{min-height:40px;padding:0 18px;font-size:14px;border-radius:var(--r-pill);flex:0 0 auto}

/* roulang page: article */
:root{
  --brand:#1D5BD8;
  --brand-700:#164AB8;
  --brand-100:#E7EEFE;
  --accent:#0FA98F;
  --accent-soft:#E6F7F3;
  --warn:#F5A524;
  --bg:#F5F7FB;
  --surface:#FFFFFF;
  --ink:#0E1A2B;
  --muted:#5B6B82;
  --border:#E4EAF3;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(14,26,43,.05);
  --sh-2:0 10px 30px -14px rgba(29,91,216,.22);
  --sec:96px;
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
ul,ol{margin:0;padding:0;}
h1,h2,h3,h4,p{margin:0;}
table{border-collapse:collapse;}
:focus-visible{outline:2px solid rgba(29,91,216,.55);outline-offset:2px;border-radius:8px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
.num{font-variant-numeric:tabular-nums;}

/* ---------- 顶部公告条 ---------- */
.topbar{background:#0B1526;color:#C9D4E4;font-size:13px;}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:36px;padding-top:6px;padding-bottom:6px;}
.topbar-inner span{display:inline-flex;align-items:center;gap:8px;line-height:1.5;}
.topbar-inner i{color:#5B8CF7;}
.topbar-inner a{color:#fff;font-weight:600;white-space:nowrap;}
.topbar-inner a:hover{color:#8FB4FF;text-decoration:underline;text-underline-offset:3px;}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--border);transition:box-shadow .25s ease-out;}
.site-header.is-scrolled{box-shadow:var(--sh-1);}
.nav-inner{display:flex;align-items:center;height:72px;gap:20px;}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;letter-spacing:-.01em;line-height:1.2;white-space:nowrap;}
.logo-mark{width:34px;height:34px;border-radius:10px;background:var(--brand);color:#fff;display:inline-flex;align-items:center;justify-content:center;font-size:15px;flex:0 0 auto;}
.logo-sub{display:block;font-size:11px;font-weight:500;color:var(--muted);letter-spacing:0;margin-top:2px;}
.nav-links{display:flex;align-items:center;gap:28px;margin:0 auto;}
.nav-link{font-size:15px;color:var(--muted);display:inline-flex;align-items:center;min-height:44px;padding:0 2px;border-bottom:2px solid transparent;transition:color .2s ease-out,border-color .2s ease-out;}
.nav-link:hover{color:var(--brand);}
.nav-link.active{color:var(--brand);font-weight:600;border-bottom-color:var(--brand);}
.nav-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{display:none;width:44px;height:44px;border-radius:10px;border:1px solid var(--border);background:#fff;color:var(--ink);align-items:center;justify-content:center;font-size:16px;cursor:pointer;transition:border-color .2s ease-out,color .2s ease-out;}
.nav-toggle:hover{border-color:rgba(29,91,216,.4);color:var(--brand);}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;min-height:44px;padding:0 20px;font-size:15px;font-weight:600;border-radius:10px;border:1px solid transparent;cursor:pointer;transition:background-color .22s ease-out,color .22s ease-out,border-color .22s ease-out,box-shadow .22s ease-out,transform .22s ease-out;white-space:nowrap;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--brand-700);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);filter:brightness(.95);}
.btn-ghost{background:#fff;border-color:var(--border);color:var(--ink);}
.btn-ghost:hover{border-color:rgba(29,91,216,.4);color:var(--brand);}
.btn-ghost:active{background:#F7F9FD;}
.btn-accent{background:var(--accent);color:#fff;}
.btn-accent:hover{filter:brightness(.94);transform:translateY(-1px);box-shadow:0 10px 24px -12px rgba(15,169,143,.6);}
.btn-accent:active{transform:translateY(0);}
.btn-pill{border-radius:var(--r-pill);}
.nav-ghost{height:40px;min-height:40px;padding:0 16px;font-size:14px;}
.nav-cta{height:40px;min-height:40px;padding:0 18px;font-size:14px;}
.btn-sm{height:40px;min-height:40px;padding:0 16px;font-size:14px;}
.btn-block{width:100%;}

/* ---------- 移动抽屉 ---------- */
.nav-mask{position:fixed;inset:0;background:rgba(14,26,43,.45);opacity:0;visibility:hidden;transition:opacity .25s ease-out,visibility .25s ease-out;z-index:55;}
.nav-mask.open{opacity:1;visibility:visible;}
.mobile-drawer{position:fixed;top:0;right:-100%;width:82%;max-width:340px;height:100%;background:#fff;z-index:60;padding:22px 20px 32px;overflow-y:auto;transition:right .3s ease-out;display:flex;flex-direction:column;gap:8px;}
.mobile-drawer.open{right:0;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--border);margin-bottom:10px;}
.drawer-title{font-size:15px;font-weight:700;}
.drawer-close{width:40px;height:40px;border-radius:10px;border:1px solid var(--border);background:#fff;cursor:pointer;color:var(--ink);}
.drawer-link{display:flex;align-items:center;justify-content:space-between;min-height:48px;font-size:15px;color:var(--ink);padding:0 4px;border-bottom:1px solid var(--border);}
.drawer-link:hover,.drawer-link.active{color:var(--brand);}
.drawer-foot{margin-top:20px;}

/* ---------- 面包屑 ---------- */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--muted);padding:26px 0 0;}
.crumb a{color:var(--muted);transition:color .2s ease-out;}
.crumb a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
.crumb-sep{color:#B9C4D6;}
.crumb-current{color:var(--ink);font-weight:500;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ---------- 文章头 ---------- */
.article-head{padding:18px 0 30px;border-bottom:1px solid var(--border);}
.article-head h1{font-size:clamp(26px,5vw,40px);font-weight:800;line-height:1.25;letter-spacing:-.01em;margin-bottom:18px;}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:18px;font-size:13px;color:var(--muted);}
.article-meta i{margin-right:5px;color:#93A2B8;}
.badge{display:inline-flex;align-items:center;gap:6px;font-size:11px;font-weight:600;background:var(--accent-soft);color:var(--accent);border-radius:var(--r-pill);padding:4px 10px;line-height:1.6;}

/* ---------- 文章布局 ---------- */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:48px;align-items:start;padding:40px 0 var(--sec);}
.article-body{max-width:780px;margin:0 auto;font-size:17px;line-height:1.9;color:#16232F;}
.article-body>*:first-child{margin-top:0;}
.article-body h2{font-size:clamp(20px,3vw,26px);font-weight:700;line-height:1.35;margin:40px 0 16px;padding-left:12px;border-left:4px solid var(--brand);}
.article-body h3{font-size:20px;font-weight:600;line-height:1.45;margin:28px 0 12px;}
.article-body h4{font-size:17px;font-weight:600;margin:22px 0 10px;}
.article-body p{margin:0 0 1.25em;}
.article-body img{border-radius:var(--r-md);margin:24px auto;}
.article-body figure{margin:24px 0;}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px;}
.article-body blockquote{margin:24px 0;padding:16px 20px;background:var(--brand-100);border-left:3px solid var(--brand);border-radius:0 var(--r-sm) var(--r-sm) 0;color:#16232F;}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body ul,.article-body ol{padding-left:1.5em;margin:0 0 1.25em;}
.article-body li{margin-bottom:.5em;}
.article-body ul li::marker{color:var(--brand);}
.article-body ol li::marker{color:var(--brand);font-weight:600;}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--brand-700);}
.article-body table{width:100%;margin:24px 0;font-size:15px;border-radius:var(--r-md);overflow:hidden;}
.article-body th{background:var(--brand-100);text-align:left;padding:12px 14px;font-weight:600;color:#16232F;}
.article-body td{padding:12px 14px;border-bottom:1px solid var(--border);}
.article-body tbody tr:nth-child(even){background:#FAFBFE;}
.article-body hr{border:0;border-top:1px solid var(--border);margin:32px 0;}
.article-body code{background:var(--brand-100);color:var(--brand-700);padding:2px 6px;border-radius:6px;font-size:14px;}

/* ---------- 空态 ---------- */
.empty-state{min-height:300px;border:1px dashed var(--border);border-radius:var(--r-lg);background:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:48px 24px;}
.empty-state i{font-size:30px;color:var(--brand);background:var(--brand-100);width:64px;height:64px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;margin-bottom:18px;}
.empty-state .empty-title{font-size:18px;font-weight:700;margin-bottom:8px;}
.empty-state .empty-sub{font-size:14px;color:var(--muted);max-width:420px;margin-bottom:20px;}

/* ---------- 侧栏 ---------- */
.article-aside{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px;}
.aside-card{background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);padding:20px;box-shadow:var(--sh-1);}
.aside-title{font-size:14px;font-weight:700;margin-bottom:14px;display:flex;align-items:center;gap:8px;}
.aside-title i{color:var(--brand);}
.toc-list{list-style:none;padding:0;margin:0;font-size:14px;line-height:1.6;}
.toc-list li{margin-bottom:10px;}
.toc-list li:last-child{margin-bottom:0;}
.toc-list a{color:var(--muted);display:block;transition:color .2s ease-out;}
.toc-list a:hover{color:var(--brand);}
.aside-links{list-style:none;padding:0;margin:0;font-size:14px;}
.aside-links li{margin-bottom:10px;}
.aside-links li:last-child{margin-bottom:0;}
.aside-links a{display:flex;align-items:center;justify-content:space-between;gap:10px;color:var(--muted);padding:8px 10px;border-radius:var(--r-sm);transition:background-color .2s ease-out,color .2s ease-out;}
.aside-links a:hover{background:var(--brand-100);color:var(--brand);}
.aside-links i{font-size:11px;}

/* ---------- 相关推荐 ---------- */
.related{padding:0 0 72px;}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px;}
.sec-title{font-size:clamp(22px,3.4vw,32px);font-weight:700;line-height:1.3;letter-spacing:-.01em;}
.sec-sub{font-size:14px;color:var(--muted);margin-top:8px;}
.sec-link{font-size:14px;font-weight:600;color:var(--brand);white-space:nowrap;}
.sec-link:hover{text-decoration:underline;text-underline-offset:3px;}
.cards-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);transition:transform .24s ease-out,box-shadow .24s ease-out;}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.card-media{position:relative;aspect-ratio:16/9;background:var(--brand-100);color:var(--brand);display:flex;align-items:center;justify-content:center;font-size:26px;overflow:hidden;}
.card-media img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out;}
.card:hover .card-media img{transform:scale(1.03);}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-title{font-size:17px;font-weight:600;line-height:1.45;transition:color .2s ease-out;}
.card:hover .card-title{color:var(--brand);}
.card-desc{font-size:14px;line-height:1.7;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--muted);padding-top:6px;border-top:1px solid var(--border);}
.card-meta i{color:var(--brand);font-size:12px;transition:transform .2s ease-out;}
.card:hover .card-meta i{transform:translateX(3px);}

/* ---------- 返回入口 ---------- */
.back-links{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;padding:0 0 var(--sec);}

/* ---------- 页脚 ---------- */
.site-footer{background:#0B1526;color:#A9B6C9;padding:64px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:40px;}
.footer-logo{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:17px;margin-bottom:16px;letter-spacing:-.01em;}
.footer-desc{font-size:14px;line-height:1.8;color:#A9B6C9;max-width:330px;}
.footer-title{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-links{list-style:none;padding:0;margin:0;}
.footer-links li{margin-bottom:12px;}
.footer-links a{font-size:14px;color:#A9B6C9;transition:color .2s ease-out;}
.footer-links a:hover{color:#fff;}
.footer-note{font-size:14px;line-height:1.8;color:#A9B6C9;}
.footer-bottom{margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.08);display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:#8494AB;}

/* ---------- 移动固定条 ---------- */
.mobile-bar{position:fixed;left:0;right:0;bottom:0;height:64px;background:#fff;border-top:1px solid var(--border);box-shadow:0 -6px 20px -12px rgba(14,26,43,.25);display:none;align-items:center;justify-content:space-between;gap:12px;padding:0 16px;z-index:40;}
.mobile-bar span{font-size:13px;color:var(--muted);line-height:1.4;}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  :root{--sec:72px;}
  .nav-links{display:none;}
  .nav-ghost{display:none;}
  .nav-toggle{display:inline-flex;}
  .article-layout{grid-template-columns:1fr;gap:36px;padding-bottom:var(--sec);}
  .article-aside{display:none;}
  .cards-3{grid-template-columns:repeat(2,1fr);gap:20px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .mobile-bar{display:flex;}
  body{padding-bottom:72px;}
}
@media (max-width:767px){
  :root{--sec:56px;}
  .container{padding:0 16px;}
  .logo{font-size:16px;}
  .article-layout{padding-top:28px;}
  .cards-3{grid-template-columns:1fr;gap:16px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .related{padding-bottom:var(--sec);}
  .topbar-inner{justify-content:flex-start;}
  .topbar-inner span{font-size:12px;}
  .crumb-current{white-space:normal;}
  .sec-head{flex-direction:column;align-items:flex-start;gap:10px;}
}
@media (max-width:520px){
  .logo-sub{display:none;}
  .nav-cta{padding:0 14px;font-size:13px;}
  .back-links{flex-direction:column;}
  .back-links .btn{width:100%;}
}

/* roulang page: category1 */
:root{
  --brand:#1D5BD8;
  --brand-700:#164AB8;
  --brand-100:#E7EEFE;
  --accent:#0FA98F;
  --accent-soft:#E6F7F3;
  --warn:#F5A524;
  --bg:#F5F7FB;
  --surface:#FFFFFF;
  --ink:#0E1A2B;
  --muted:#5B6B82;
  --border:#E4EAF3;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(14,26,43,.05);
  --sh-2:0 10px 30px -14px rgba(29,91,216,.22);
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .2s ease-out, border-color .2s ease-out, background-color .2s ease-out}
a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
h1,h2,h3,h4{margin:0;line-height:1.3;letter-spacing:-.01em}
p{margin:0 0 1.25em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
:focus-visible{outline:2px solid rgba(29,91,216,.45);outline-offset:2px;border-radius:4px}

/* ---------- 公告条 ---------- */
.announce{background:var(--brand-100);border-bottom:1px solid rgba(29,91,216,.10)}
.announce .container{display:flex;align-items:center;gap:10px;min-height:36px;font-size:13px;color:#2C3F60;flex-wrap:wrap}
.announce i{color:var(--brand);font-size:12px}
.announce .announce-hl{color:#B8791A;font-weight:600}
.announce a{color:var(--brand);font-weight:600}
.announce a:hover{color:var(--brand-700)}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--surface);
  border-bottom:1px solid var(--border);
  transition:box-shadow .24s ease-out;
}
.site-header.scrolled{box-shadow:0 6px 20px -14px rgba(14,26,43,.28)}
.nav-inner{height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.logo{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;letter-spacing:-.01em;color:var(--ink);line-height:1.2}
.logo:hover{text-decoration:none;color:var(--ink)}
.logo-mark{
  width:34px;height:34px;flex:0 0 34px;border-radius:10px;
  background:var(--brand);color:#fff;display:grid;place-items:center;
  font-size:15px;box-shadow:0 6px 16px -8px rgba(29,91,216,.6);
}
.logo-sub{display:block;font-size:11px;font-weight:500;color:var(--muted);letter-spacing:0;margin-top:2px}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-link{position:relative;font-size:15px;color:#33415A;padding:6px 0}
.nav-link:hover{color:var(--brand);text-decoration:none}
.nav-link.active{color:var(--brand);font-weight:600}
.nav-link.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--brand);border-radius:2px;
}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--border);
  background:#fff;border-radius:10px;color:var(--ink);font-size:17px;cursor:pointer;
  transition:border-color .2s ease-out,color .2s ease-out;
}
.nav-toggle:hover{border-color:rgba(29,91,216,.4);color:var(--brand)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;border-radius:10px;
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:background-color .24s ease-out, color .24s ease-out, border-color .24s ease-out, transform .24s ease-out, box-shadow .24s ease-out;
}
.btn:hover{text-decoration:none}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 1px 2px rgba(14,26,43,.05)}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0);filter:brightness(.96)}
.btn-ghost{background:#fff;border-color:var(--border);color:var(--ink)}
.btn-ghost:hover{border-color:rgba(29,91,216,.4);color:var(--brand)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:#0C9480;color:#fff;transform:translateY(-1px);box-shadow:0 10px 26px -14px rgba(15,169,143,.6)}
.btn-pill{border-radius:var(--r-pill)}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px}

/* ---------- 页头 ---------- */
.page-head{
  position:relative;
  border-bottom:1px solid var(--border);
  padding:44px 0 52px;
  background-image:linear-gradient(180deg,rgba(255,255,255,.95),rgba(245,247,251,.97)),url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
}
.breadcrumb{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:14px;color:var(--muted);margin-bottom:18px}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:#A8B4C6}
.breadcrumb .current{color:var(--ink)}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;padding:4px 12px;
  border-radius:var(--r-pill);background:var(--accent-soft);color:var(--accent);
}
.page-title{
  font-size:clamp(26px,5vw,44px);font-weight:800;line-height:1.25;letter-spacing:-.01em;
  margin:16px 0 14px;max-width:920px;
}
.page-lead{font-size:16px;color:var(--muted);max-width:620px;margin:0}

/* ---------- 板块 ---------- */
.section{padding:96px 0}
.section-alt{background:var(--surface);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.section-title{font-size:clamp(22px,3.4vw,32px);font-weight:700;line-height:1.3;margin-bottom:32px;max-width:820px}
.section-sub{font-size:15px;color:var(--muted);margin:-20px 0 32px;max-width:760px}

.split{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:start}
.split-main p{font-size:16px;line-height:1.85;color:#2B3A50;margin-bottom:1.25em}
.split-main p:last-child{margin-bottom:0}

.note-card{
  background:var(--surface);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);padding:28px;border-top:3px solid var(--brand);
}
.note-card h3{font-size:17px;margin-bottom:6px}
.note-card .note-tip{font-size:13px;color:var(--muted);margin-bottom:14px}
.note-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:12px 0;border-bottom:1px dashed var(--border);
  font-size:15px;color:#33415A;
}
.note-list li:last-child{border-bottom:0;padding-bottom:0}
.note-num{color:var(--accent);font-weight:700;font-size:14px;min-width:22px}

/* ---------- 图文块 ---------- */
.feature{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.feature + .feature{margin-top:64px}
.feature.reverse .feature-media{order:2}
.media{
  border-radius:var(--r-lg);overflow:hidden;background:var(--brand-100);
  box-shadow:var(--sh-1);aspect-ratio:4/3;
}
.media img{width:100%;height:100%;object-fit:cover;transition:transform .24s ease-out}
.media:hover img{transform:scale(1.03)}
.feature-body h3{font-size:20px;font-weight:600;margin-bottom:14px}
.feature-body p{font-size:16px;color:#2B3A50;line-height:1.85}
.check-list{margin-top:18px}
.check-list li{display:flex;gap:12px;align-items:flex-start;padding:9px 0;font-size:15px;color:#33415A}
.check-list i{color:var(--brand);font-size:14px;margin-top:5px}
.feature-cta{margin-top:24px}

/* ---------- 要点卡片 ---------- */
.fact-list{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.fact-item{
  display:flex;gap:16px;background:var(--surface);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);padding:24px;
  transition:transform .24s ease-out, box-shadow .24s ease-out;
}
.fact-item:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.fact-icon{
  flex:0 0 40px;width:40px;height:40px;border-radius:12px;
  background:var(--brand-100);color:var(--brand);display:grid;place-items:center;font-size:15px;
}
.fact-item h3{font-size:17px;font-weight:600;margin-bottom:6px}
.fact-item p{font-size:14px;line-height:1.7;color:var(--muted);margin:0}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:14px;max-width:900px}
.faq-item{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-md);overflow:hidden;transition:border-color .24s ease-out, box-shadow .24s ease-out}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;font-size:16px;font-weight:600;cursor:pointer;list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand)}
.faq-item summary i{color:var(--muted);font-size:14px;transition:transform .24s ease-out,color .24s ease-out}
.faq-item[open]{border-color:rgba(29,91,216,.35);box-shadow:inset 3px 0 0 var(--brand)}
.faq-item[open] summary i{transform:rotate(180deg);color:var(--brand)}
.faq-answer{padding:0 20px 20px;font-size:15px;line-height:1.8;color:var(--muted)}

/* ---------- 内链胶囊 ---------- */
.chip-links{display:flex;flex-wrap:wrap;gap:12px}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:11px 20px;border-radius:var(--r-pill);
  background:var(--surface);border:1px solid var(--border);
  font-size:14px;color:var(--ink);box-shadow:var(--sh-1);
  transition:transform .24s ease-out, border-color .24s ease-out, color .24s ease-out, box-shadow .24s ease-out;
}
.chip:hover{color:var(--brand);border-color:rgba(29,91,216,.4);transform:translateY(-1px);box-shadow:var(--sh-2);text-decoration:none}
.chip i{color:var(--brand);font-size:12px}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--brand-100);border-radius:var(--r-lg);
  padding:40px;display:flex;align-items:center;justify-content:space-between;
  gap:32px;flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(20px,2.6vw,26px);margin-bottom:8px}
.cta-band p{font-size:15px;color:#33415A;margin:0;max-width:560px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{background:#0B1526;color:#A9B6C9;padding:64px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:40px}
.footer-logo{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:700;color:#fff;letter-spacing:-.01em;margin-bottom:14px}
.footer-logo .logo-mark{box-shadow:none}
.footer-desc{font-size:14px;line-height:1.75;color:#A9B6C9;margin:0;max-width:340px}
.footer-title{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-links li{margin-bottom:10px}
.footer-links a{font-size:14px;color:#A9B6C9}
.footer-links a:hover{color:#fff;text-decoration:none}
.footer-note{font-size:14px;line-height:1.75;color:#A9B6C9;margin:0}
.footer-bottom{
  margin-top:44px;padding-top:22px;
  border-top:1px solid rgba(255,255,255,.08);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#8797AC;
}

/* ---------- 移动端抽屉 ---------- */
.drawer{
  position:fixed;top:0;right:0;z-index:90;
  width:min(320px,86vw);height:100%;
  background:#fff;padding:22px 20px;
  display:flex;flex-direction:column;gap:6px;
  transform:translateX(102%);
  transition:transform .3s ease-out;
  box-shadow:-18px 0 40px -24px rgba(14,26,43,.4);
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-close{
  width:44px;height:44px;border-radius:10px;border:1px solid var(--border);
  background:#fff;color:var(--ink);font-size:17px;cursor:pointer;
}
.drawer-close:hover{border-color:rgba(29,91,216,.4);color:var(--brand)}
.drawer-link{
  display:flex;align-items:center;min-height:48px;padding:0 14px;
  border-radius:10px;font-size:15px;color:#33415A;
}
.drawer-link:hover{background:var(--brand-100);color:var(--brand);text-decoration:none}
.drawer-link.active{background:var(--brand-100);color:var(--brand);font-weight:600}
.drawer-cta{margin-top:auto;width:100%}
.drawer-mask{
  position:fixed;inset:0;z-index:85;background:rgba(14,26,43,.42);
  opacity:0;visibility:hidden;transition:opacity .3s ease-out, visibility .3s ease-out;
}
.drawer-mask.show{opacity:1;visibility:visible}

/* ---------- 移动固定转化条 ---------- */
.mobile-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;
  height:64px;background:#fff;border-top:1px solid var(--border);
  box-shadow:0 -10px 26px -18px rgba(14,26,43,.45);
  align-items:center;justify-content:space-between;gap:12px;padding:0 16px;
}
.mobile-bar-text{font-size:13px;color:var(--muted)}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{padding:0 20px}
}
@media (max-width:1023px){
  .section{padding:72px 0}
  .nav-links{display:none}
  .nav-ghost{display:none}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .split{grid-template-columns:1fr;gap:32px}
  .feature{grid-template-columns:1fr;gap:28px}
  .feature.reverse .feature-media{order:0}
  .feature + .feature{margin-top:48px}
  .media{aspect-ratio:16/9}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .mobile-bar{display:flex}
  body{padding-bottom:72px}
  .cta-band{padding:32px 24px}
}
@media (max-width:767px){
  .section{padding:56px 0}
  .container{padding:0 16px}
  .page-head{padding:32px 0 40px}
  .fact-list{grid-template-columns:1fr;gap:16px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:8px}
  .btn{width:auto}
  .cta-actions .btn{flex:1 1 auto;justify-content:center}
}
@media (max-width:520px){
  .announce .container{font-size:12.5px}
  .logo{font-size:16px}
  .logo-sub{font-size:10.5px}
  .page-title{font-size:clamp(24px,7vw,30px)}
  .cta-band{padding:26px 18px}
  .note-card{padding:22px}
}

/* roulang page: category2 */
:root{
  --brand:#1D5BD8;
  --brand-700:#164AB8;
  --brand-100:#E7EEFE;
  --accent:#0FA98F;
  --accent-soft:#E6F7F3;
  --warn:#F5A524;
  --bg:#F5F7FB;
  --surface:#FFFFFF;
  --ink:#0E1A2B;
  --muted:#5B6B82;
  --border:#E4EAF3;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(14,26,43,.05);
  --sh-2:0 10px 30px -14px rgba(29,91,216,.22);
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  padding-bottom:72px;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0}
button{font-family:inherit}
@media (min-width:1024px){body{padding-bottom:0}}

/* 文字层级 */
.page-title{font-size:clamp(26px,5vw,44px);font-weight:800;line-height:1.25;letter-spacing:-.01em}
.sec-title{font-size:clamp(22px,3.4vw,32px);font-weight:700;line-height:1.3}
.card-title{font-size:18px;font-weight:600;line-height:1.45;transition:color .2s ease}
.card-text{font-size:14px;line-height:1.7;color:var(--muted);margin:0}
.page-lead{margin-top:16px;font-size:17px;line-height:1.7;color:var(--muted);max-width:640px}
.sec-sub{margin-top:12px;font-size:16px;color:var(--muted)}

/* 顶部公告条 */
.notice-bar{background:var(--brand-100);color:var(--brand-700);font-size:13px}
.notice-inner{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;padding-top:8px;padding-bottom:8px;min-height:36px}
.notice-inner i{margin-right:6px}
.notice-link{font-weight:600;color:var(--brand-700);text-decoration:underline;text-underline-offset:3px;transition:color .2s ease}
.notice-link:hover{color:var(--brand)}

/* 导航 */
.site-header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--border);transition:box-shadow .25s ease}
.site-header.is-scrolled{box-shadow:var(--sh-1)}
.nav-inner{display:flex;align-items:center;gap:16px;min-height:72px}
.logo{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:700;letter-spacing:-.01em;color:var(--ink);line-height:1.2}
.logo-mark{width:34px;height:34px;flex:0 0 34px;border-radius:10px;background:var(--brand-100);color:var(--brand);display:inline-flex;align-items:center;justify-content:center;font-size:14px}
.logo-sub{display:block;font-size:11px;font-weight:500;color:var(--muted);letter-spacing:0;margin-top:2px}
.nav-links{display:none}
@media (min-width:1024px){.nav-links{display:flex;align-items:center;gap:28px;margin-left:auto}}
.nav-link{position:relative;display:inline-flex;align-items:center;height:44px;font-size:15px;color:var(--muted);transition:color .2s ease}
.nav-link:hover{color:var(--brand)}
.nav-link.active{color:var(--brand);font-weight:600}
.nav-link.active::after{content:"";position:absolute;left:0;right:0;bottom:6px;height:2px;border-radius:2px;background:var(--brand)}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
@media (min-width:1024px){.nav-actions{margin-left:0}}
.nav-ghost{display:none}
@media (min-width:1024px){.nav-ghost{display:inline-flex}}
.nav-toggle{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:12px;border:1px solid var(--border);background:#fff;color:var(--ink);cursor:pointer;transition:color .2s ease,border-color .2s ease}
.nav-toggle:hover{color:var(--brand);border-color:rgba(29,91,216,.4)}
@media (min-width:1024px){.nav-toggle{display:none}}
@media (max-width:1023px){.nav-actions .btn-primary{display:none}}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 20px;border-radius:10px;font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;text-align:center;transition:background-color .22s ease-out,color .22s ease-out,box-shadow .22s ease-out,transform .22s ease-out,border-color .22s ease-out}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 1px 2px rgba(14,26,43,.08)}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0);filter:brightness(.95)}
.btn-ghost{background:#fff;border-color:var(--border);color:var(--ink)}
.btn-ghost:hover{border-color:rgba(29,91,216,.4);color:var(--brand)}
.btn-ghost:active{transform:translateY(0)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:#0C8F79;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-pill{border-radius:var(--r-pill)}
.btn:focus-visible,a:focus-visible,button:focus-visible{outline:2px solid rgba(29,91,216,.45);outline-offset:2px}
.nav-actions .btn{min-height:40px;height:40px;font-size:14px;padding:0 18px}

/* 页头 */
.page-head{background:#fff;border-bottom:1px solid var(--border);padding:32px 0 48px}
.crumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:14px;color:var(--muted);margin-bottom:22px}
.crumb a{color:var(--muted);transition:color .2s ease}
.crumb a:hover{color:var(--brand)}
.crumb-sep{color:#B7C3D6}
.crumb-current{color:var(--ink);font-weight:600}
.head-media{position:relative;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-2);background:var(--brand-100);min-height:220px}
.head-media img{width:100%;height:100%;max-height:340px;min-height:220px;object-fit:cover}

/* 板块 */
.section{padding:56px 0}
.section-tight{padding:28px 0}
@media (min-width:768px){.section{padding:72px 0}.section-tight{padding:40px 0}}
@media (min-width:1024px){.section{padding:96px 0}.section-tight{padding:48px 0}}
.sec-head{margin-bottom:32px;max-width:760px}

/* 入口矩阵卡 */
.matrix-card{display:flex;flex-direction:column;background:var(--surface);border-radius:var(--r-lg);box-shadow:var(--sh-1);overflow:hidden;transition:transform .24s ease,box-shadow .24s ease}
.matrix-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.matrix-card:hover .card-title{color:var(--brand)}
@media (min-width:640px){.matrix-card{flex-direction:row}}
.matrix-media{position:relative;flex:0 0 40%;min-height:190px;background:var(--brand-100);overflow:hidden}
.matrix-media img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.matrix-card:hover .matrix-media img{transform:scale(1.03)}
.matrix-body{flex:1 1 60%;min-width:0;padding:24px;display:flex;flex-direction:column;gap:12px}
@media (min-width:1024px){.matrix-body{padding:26px}}
.badge{display:inline-flex;align-items:center;align-self:flex-start;font-size:11px;line-height:1;font-weight:600;letter-spacing:.02em;color:var(--accent);background:var(--accent-soft);border-radius:var(--r-pill);padding:6px 10px}
.text-link{display:inline-flex;align-items:center;gap:8px;margin-top:auto;font-size:14px;font-weight:600;color:var(--brand);transition:color .2s ease,gap .2s ease}
.text-link:hover{color:var(--brand-700);gap:12px}

/* 对比表 */
.table-wrap{background:var(--surface);border-radius:var(--r-lg);box-shadow:var(--sh-1);overflow-x:auto}
.compare{width:100%;min-width:700px;border-collapse:collapse}
.compare th{background:var(--brand-100);color:var(--brand-700);font-size:14px;font-weight:600;text-align:left;padding:16px 20px;white-space:nowrap}
.compare td{padding:16px 20px;font-size:14px;line-height:1.7;color:var(--muted);border-top:1px solid var(--border);vertical-align:top}
.compare tbody tr:nth-child(even) td{background:#FAFBFE}
.compare td:first-child{color:var(--ink);font-weight:600}

/* 数据条 */
.stat-strip{display:grid;grid-template-columns:1fr;gap:1px;background:var(--border);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1)}
@media (min-width:640px){.stat-strip{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.stat-strip{grid-template-columns:repeat(4,1fr)}}
.stat-item{background:var(--surface);padding:24px;text-align:center}
.stat-num{font-size:28px;font-weight:800;line-height:1.2;color:var(--accent);font-variant-numeric:tabular-nums}
.stat-label{margin-top:6px;font-size:14px;color:var(--muted)}

/* 内链胶囊 */
.pill-band{background:var(--surface);border-radius:var(--r-lg);box-shadow:var(--sh-1);padding:24px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px}
.pill-band-title{font-size:15px;font-weight:600;color:var(--ink)}
.pill-list{display:flex;flex-wrap:wrap;gap:12px}
.pill-link{display:inline-flex;align-items:center;gap:8px;min-height:44px;padding:11px 20px;border-radius:var(--r-pill);background:var(--bg);border:1px solid var(--border);font-size:14px;font-weight:600;color:var(--ink);transition:background-color .22s ease-out,color .22s ease-out,border-color .22s ease-out,transform .22s ease-out,box-shadow .22s ease-out}
.pill-link:hover{background:#fff;color:var(--brand);border-color:rgba(29,91,216,.4);transform:translateY(-2px);box-shadow:var(--sh-2)}

/* CTA */
.cta-band{background:var(--brand-100);border-radius:var(--r-lg);padding:36px 24px;display:flex;flex-direction:column;gap:24px}
@media (min-width:1024px){.cta-band{flex-direction:row;align-items:center;justify-content:space-between;padding:48px 40px}}
.cta-title{font-size:clamp(20px,2.6vw,26px);font-weight:700;line-height:1.35}
.cta-text{margin-top:10px;font-size:15px;color:var(--muted);max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* 页脚 */
.site-footer{background:#0B1526;color:#A9B6C9;margin-top:48px;padding:56px 0 28px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media (min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:40px}}
.footer-logo{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:700;letter-spacing:-.01em}
.footer-logo .logo-mark{background:rgba(255,255,255,.08);color:#fff}
.footer-desc{margin-top:16px;font-size:14px;line-height:1.75;color:#A9B6C9;max-width:340px}
.footer-title{color:#fff;font-size:14px;font-weight:600;margin-bottom:16px}
.footer-links li+li{margin-top:10px}
.footer-links a{font-size:14px;color:#A9B6C9;transition:color .2s ease}
.footer-links a:hover{color:#fff}
.footer-note{font-size:13px;line-height:1.75;color:#8A99AF}
.footer-bottom{margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.08);display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;font-size:13px;color:#8A99AF}

/* 移动端固定转化条 */
.mobile-bar{position:fixed;left:0;right:0;bottom:0;z-index:60;display:flex;align-items:center;justify-content:space-between;gap:12px;height:64px;padding:0 16px;background:#fff;border-top:1px solid var(--border);box-shadow:0 -8px 24px -16px rgba(14,26,43,.35)}
.mobile-bar-text{font-size:13px;line-height:1.4;color:var(--muted)}
.mobile-bar .btn{min-height:40px;height:40px;font-size:14px;padding:0 16px}
@media (min-width:1024px){.mobile-bar{display:none}}

/* 抽屉 */
.drawer-mask{position:fixed;inset:0;z-index:65;background:rgba(14,26,43,.45);opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease}
.drawer-mask.open{opacity:1;visibility:visible}
.drawer{position:fixed;top:0;right:0;bottom:0;z-index:70;width:min(320px,86vw);background:#fff;box-shadow:-10px 0 30px -18px rgba(14,26,43,.4);transform:translateX(100%);transition:transform .28s ease-out;display:flex;flex-direction:column;gap:8px;padding:20px;overflow-y:auto}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--border)}
.drawer-brand{font-size:16px;font-weight:700;letter-spacing:-.01em;color:var(--ink)}
.drawer-close{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:12px;border:1px solid var(--border);background:#fff;color:var(--ink);cursor:pointer;transition:color .2s ease,border-color .2s ease}
.drawer-close:hover{color:var(--brand);border-color:rgba(29,91,216,.4)}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin-top:8px}
.drawer-link{padding:13px 12px;border-radius:10px;font-size:15px;color:var(--muted);transition:background-color .2s ease,color .2s ease}
.drawer-link:hover{background:var(--brand-100);color:var(--brand)}
.drawer-link.active{background:var(--brand-100);color:var(--brand);font-weight:600}
.drawer-cta{margin-top:auto;width:100%}

/* roulang page: category3 */
:root{
    --brand:#1D5BD8;
    --brand-700:#164AB8;
    --brand-100:#E7EEFE;
    --accent:#0FA98F;
    --accent-soft:#E6F7F3;
    --warn:#F5A524;
    --bg:#F5F7FB;
    --surface:#FFFFFF;
    --ink:#0E1A2B;
    --muted:#5B6B82;
    --border:#E4EAF3;
    --r-sm:8px;
    --r-md:12px;
    --r-lg:16px;
    --r-pill:999px;
    --sh-1:0 1px 2px rgba(14,26,43,.05);
    --sh-2:0 10px 30px -14px rgba(29,91,216,.22);
    --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  }

  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;
    font-family:var(--font-sans);
    font-size:16px;
    line-height:1.75;
    color:var(--ink);
    background:var(--bg);
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none}
  a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
  button{font:inherit;cursor:pointer}
  h1,h2,h3,h4{letter-spacing:-.01em}
  .num{font-variant-numeric:tabular-nums}

  .container{max-width:1200px;margin:0 auto;padding:0 20px}
  @media (max-width:767px){.container{padding:0 16px}}

  /* ---------- 顶部导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:50;
    background:#fff;border-bottom:1px solid var(--border);
    transition:box-shadow .24s ease-out;
  }
  .site-header.scrolled{box-shadow:var(--sh-1)}
  .nav-inner{height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px}
  .logo{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:700;line-height:1.2;color:var(--ink)}
  .logo:hover{color:var(--ink);text-decoration:none}
  .logo-mark{
    width:36px;height:36px;flex:0 0 36px;border-radius:10px;
    background:var(--brand);color:#fff;display:grid;place-items:center;font-size:15px;
  }
  .logo-sub{display:block;font-size:11px;font-weight:500;color:var(--muted);letter-spacing:0;margin-top:2px}
  .nav-links{display:flex;align-items:center;gap:28px}
  .nav-link{
    position:relative;display:inline-flex;align-items:center;height:72px;
    font-size:15px;color:#33425A;transition:color .2s ease-out;
  }
  .nav-link:hover{color:var(--brand);text-decoration:none}
  .nav-link.active{color:var(--brand);font-weight:600}
  .nav-link.active::after{
    content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--brand);border-radius:2px;
  }
  .nav-actions{display:flex;align-items:center;gap:12px}
  .nav-actions .btn{height:40px;padding:0 18px;font-size:14px}
  .nav-toggle{
    display:none;width:44px;height:44px;border-radius:10px;background:#fff;
    border:1px solid var(--border);color:var(--ink);place-items:center;
  }
  .nav-toggle:hover{border-color:rgba(29,91,216,.4);color:var(--brand)}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:44px;padding:0 20px;font-size:15px;font-weight:600;
    border-radius:10px;border:1px solid transparent;
    transition:background-color .22s ease-out,color .22s ease-out,border-color .22s ease-out,transform .22s ease-out,box-shadow .22s ease-out,filter .22s ease-out;
  }
  .btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sh-1)}
  .btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);text-decoration:none}
  .btn-primary:active{transform:translateY(0);filter:brightness(.96)}
  .btn-ghost{background:#fff;border-color:var(--border);color:var(--ink)}
  .btn-ghost:hover{border-color:rgba(29,91,216,.4);color:var(--brand);text-decoration:none}
  .btn-accent{background:var(--accent);color:#fff}
  .btn-accent:hover{background:#0C907A;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);text-decoration:none}
  .btn-pill{border-radius:var(--r-pill)}
  .btn:focus-visible{outline:none;box-shadow:0 0 0 2px rgba(29,91,216,.45),0 0 0 4px #fff}

  /* ---------- 抽屉 ---------- */
  .drawer-mask{
    position:fixed;inset:0;background:rgba(14,26,43,.45);
    opacity:0;pointer-events:none;transition:opacity .28s ease-out;z-index:55;
  }
  .drawer-mask.open{opacity:1;pointer-events:auto}
  .drawer{
    position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);background:#fff;
    transform:translateX(101%);transition:transform .28s ease-out;z-index:60;
    padding:22px;display:flex;flex-direction:column;gap:6px;
    box-shadow:-12px 0 34px -22px rgba(14,26,43,.5);
  }
  .drawer.open{transform:translateX(0)}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
  .drawer-close{width:44px;height:44px;border-radius:10px;border:1px solid var(--border);background:#fff;color:var(--ink)}
  .drawer-close:hover{color:var(--brand);border-color:rgba(29,91,216,.4)}
  .drawer-link{
    padding:14px 4px;font-size:16px;color:var(--ink);border-bottom:1px solid var(--border);
  }
  .drawer-link:hover{color:var(--brand);text-decoration:none}
  .drawer-link.active{color:var(--brand);font-weight:600}
  .drawer-cta{margin-top:auto;display:flex;flex-direction:column;gap:10px}
  .drawer-cta .btn{width:100%}

  /* ---------- 版块 ---------- */
  .section{padding:96px 0}
  @media (max-width:1023px){.section{padding:72px 0}}
  @media (max-width:767px){.section{padding:56px 0}}
  .section-head{
    display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
    gap:16px;margin-bottom:32px;
  }
  .section-title{font-size:clamp(22px,3.4vw,32px);font-weight:700;line-height:1.3;margin:0}
  .section-desc{margin:10px 0 0;font-size:15px;line-height:1.75;color:var(--muted);max-width:660px}
  .more-link{font-size:14px;font-weight:600;color:var(--brand);display:inline-flex;align-items:center;gap:6px}
  .more-link:hover{text-decoration:underline;text-underline-offset:3px}

  /* ---------- Hero ---------- */
  .hero{background:#fff;border-bottom:1px solid var(--border);padding:56px 0 68px}
  @media (max-width:1023px){.hero{padding:40px 0 48px}}
  .hero-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:48px;align-items:center}
  @media (max-width:1023px){.hero-grid{grid-template-columns:1fr;gap:32px}}
  .breadcrumb{display:flex;flex-wrap:wrap;gap:8px;font-size:14px;color:var(--muted);margin-bottom:18px}
  .breadcrumb .sep{color:#A9B6C9}
  .breadcrumb .current{color:var(--ink)}
  .hero h1{font-size:clamp(26px,5vw,44px);font-weight:800;line-height:1.25;margin:0 0 16px;letter-spacing:-.01em}
  .hero-lead{margin:0 0 26px;font-size:17px;line-height:1.8;color:var(--muted);max-width:600px}
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px}
  .hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
  .tag{
    display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--muted);
    background:var(--bg);border-radius:var(--r-pill);padding:6px 14px;
  }
  .tag i{color:var(--accent);font-size:12px}
  .hero-media img{
    width:100%;height:360px;object-fit:cover;border-radius:var(--r-lg);box-shadow:var(--sh-2);
  }
  @media (max-width:1023px){.hero-media img{height:220px}}

  /* ---------- 步骤流 ---------- */
  .steps{position:relative;margin:0;padding:0;list-style:none;display:flex;flex-direction:column;gap:22px}
  .steps::before{content:"";position:absolute;left:15px;top:14px;bottom:14px;width:2px;background:var(--border)}
  .step{position:relative;display:grid;grid-template-columns:32px minmax(0,1fr);gap:22px;align-items:start}
  .step-dot{
    width:32px;height:32px;border-radius:999px;background:var(--accent);color:#fff;
    display:grid;place-items:center;font-size:12px;font-weight:700;font-variant-numeric:tabular-nums;
    box-shadow:0 0 0 6px #fff;position:relative;z-index:1;
  }
  .step-body{
    background:var(--surface);border-radius:var(--r-md);padding:20px 24px;
    box-shadow:var(--sh-1);transition:transform .24s ease-out,box-shadow .24s ease-out;
  }
  .step-body:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
  .step-body h3{margin:0 0 8px;font-size:18px;font-weight:600;line-height:1.45}
  .step-body p{margin:0;font-size:14px;line-height:1.75;color:var(--muted)}
  @media (max-width:639px){
    .step{grid-template-columns:26px minmax(0,1fr);gap:14px}
    .step-dot{width:26px;height:26px;font-size:11px}
    .steps::before{left:12px}
    .step-body{padding:18px}
  }

  /* ---------- 卡片网格 ---------- */
  .grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
  @media (max-width:1023px){.grid-3{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}}
  @media (max-width:639px){.grid-3{grid-template-columns:1fr;gap:16px}}
  .card{
    display:flex;flex-direction:column;height:100%;overflow:hidden;
    background:var(--surface);border-radius:var(--r-lg);box-shadow:var(--sh-1);
    transition:transform .24s ease-out,box-shadow .24s ease-out;
  }
  .card:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
  .card-media{aspect-ratio:16/9;overflow:hidden;background:var(--brand-100)}
  .card-media img{width:100%;height:100%;object-fit:cover;transition:transform .24s ease-out}
  .card:hover .card-media img{transform:scale(1.03)}
  .card-body{padding:24px 26px 26px;display:flex;flex-direction:column;gap:10px;flex:1}
  .card-body h3{margin:0;font-size:18px;font-weight:600;line-height:1.45;transition:color .2s ease-out}
  .card:hover .card-body h3{color:var(--brand)}
  .card-body p{margin:0;font-size:14px;line-height:1.7;color:var(--muted)}
  .badge{
    display:inline-flex;align-items:center;font-size:11px;font-weight:600;line-height:1;
    padding:5px 10px;border-radius:var(--r-pill);background:var(--accent-soft);color:var(--accent);
    width:fit-content;
  }
  .card-meta{
    margin-top:auto;display:flex;align-items:center;gap:8px;font-size:13px;
    color:var(--muted);padding-top:6px;
  }
  .card-meta i{color:var(--brand);font-size:12px}

  /* ---------- FAQ ---------- */
  .faq-list{display:flex;flex-direction:column;gap:12px;max-width:880px}
  .faq{background:#fff;border:1px solid var(--border);border-radius:var(--r-md);overflow:hidden}
  .faq summary{
    position:relative;list-style:none;cursor:pointer;padding:18px 22px;
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    font-size:16px;font-weight:600;line-height:1.5;
  }
  .faq summary::-webkit-details-marker{display:none}
  .faq summary::before{
    content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--brand);
    transform:scaleY(0);transform-origin:top;transition:transform .24s ease-out;
  }
  .faq[open] summary::before{transform:scaleY(1)}
  .faq summary:hover{color:var(--brand)}
  .faq .chev{color:var(--muted);transition:transform .24s ease-out,color .24s ease-out;font-size:13px}
  .faq[open] .chev{transform:rotate(180deg);color:var(--brand)}
  .faq-a{margin:0;padding:0 22px 20px;font-size:15px;line-height:1.8;color:var(--muted)}

  /* ---------- 胶囊内链 ---------- */
  .pill-links{display:flex;flex-wrap:wrap;gap:12px}
  .pill-link{
    display:inline-flex;align-items:center;gap:8px;height:44px;padding:0 20px;
    border-radius:var(--r-pill);background:#fff;border:1px solid var(--border);
    font-size:14px;font-weight:600;color:var(--ink);
    transition:border-color .22s ease-out,color .22s ease-out,box-shadow .22s ease-out;
  }
  .pill-link:hover{border-color:rgba(29,91,216,.4);color:var(--brand);box-shadow:var(--sh-1);text-decoration:none}
  .pill-link i{font-size:12px;color:var(--accent)}

  /* ---------- CTA ---------- */
  .cta-band{
    background:var(--brand-100);border-radius:var(--r-lg);padding:40px;
    display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
  }
  @media (max-width:767px){.cta-band{padding:28px 22px}}
  .cta-band h2{margin:0 0 8px;font-size:clamp(20px,3vw,26px);font-weight:700;line-height:1.35}
  .cta-band p{margin:0;font-size:15px;line-height:1.75;color:#3C4C64;max-width:560px}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px}

  /* ---------- 页脚 ---------- */
  .site-footer{background:#0B1526;color:#fff;padding:64px 0 28px}
  .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px}
  @media (max-width:1023px){.footer-grid{grid-template-columns:1fr 1fr;gap:28px}}
  @media (max-width:639px){.footer-grid{grid-template-columns:1fr}}
  .footer-logo{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;margin-bottom:14px}
  .footer-desc{margin:0;font-size:14px;line-height:1.8;color:#A9B6C9}
  .footer-title{font-size:14px;font-weight:600;color:#fff;margin-bottom:14px}
  .footer-links{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
  .footer-links a{font-size:14px;color:#A9B6C9}
  .footer-links a:hover{color:#fff;text-decoration:none}
  .footer-note{margin:0;font-size:14px;line-height:1.8;color:#A9B6C9}
  .footer-bottom{
    margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.08);
    display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
    font-size:13px;color:#8C9AB0;
  }

  /* ---------- 移动固定条 ---------- */
  .sticky-bar{
    position:fixed;left:0;right:0;bottom:0;height:64px;z-index:40;
    display:none;align-items:center;justify-content:space-between;gap:12px;padding:0 16px;
    background:#fff;border-top:1px solid var(--border);
    box-shadow:0 -8px 22px -16px rgba(14,26,43,.45);
  }
  .sticky-bar span{font-size:13px;color:var(--muted);line-height:1.4}
  .sticky-bar .btn{height:40px;padding:0 16px;font-size:14px;flex:0 0 auto}
  @media (max-width:1023px){
    .sticky-bar{display:flex}
    body{padding-bottom:72px}
    .nav-links,.nav-ghost{display:none}
    .nav-toggle{display:grid}
  }

  :target{scroll-margin-top:96px}
  section[id]{scroll-margin-top:96px}